posix: remove superseded POSIX regex wrappers

The old POSIX regex wrappers have been superseded by our own regexp API
that provides a higher-level abstraction. Remove the POSIX wrappers in
favor of the new one.

Author: pks-t

cmake/Modules/FindPCRE2.cmake

@@ -20,15 +20,14 @@ FIND_PATH(PCRE2_INCLUDE_DIR NAMES pcre2posix.h)
 
 # Look for the library.
 FIND_LIBRARY(PCRE2_LIBRARY NAMES pcre2-8)
-FIND_LIBRARY(PCRE2_POSIX_LIBRARY NAMES pcre2-posix)
 
 # Handle the QUIETLY and REQUIRED arguments and set PCRE2_FOUND to TRUE if all listed variables are TRUE.
 INCLUDE(FindPackageHandleStandardArgs)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(PCRE2 DEFAULT_MSG PCRE2_LIBRARY PCRE2_POSIX_LIBRARY PCRE2_INCLUDE_DIR)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(PCRE2 DEFAULT_MSG PCRE2_LIBRARY PCRE2_INCLUDE_DIR)
 
 # Copy the results to the output variables.
 IF(PCRE2_FOUND)
-	SET(PCRE2_LIBRARIES ${PCRE2_LIBRARY} ${PCRE2_POSIX_LIBRARY})
+	SET(PCRE2_LIBRARIES ${PCRE2_LIBRARY})
 	SET(PCRE2_INCLUDE_DIRS ${PCRE2_INCLUDE_DIR})
 ELSE(PCRE2_FOUND)
 	SET(PCRE2_LIBRARIES)

src/common.h

@@ -88,7 +88,6 @@
 #include "git2/deprecated.h"
 
 #include "posix.h"
-#include "posix_regex.h"
 
 #define DEFAULT_BUFSIZE 65536
 #define FILEIO_BUFSIZE DEFAULT_BUFSIZE

src/errors.c

@@ -110,21 +110,6 @@ void git_error_set_str(int error_class, const char *string)
 		set_error_from_buffer(error_class);
 }
 
-int git_error_set_regex(const p_regex_t *regex, int error_code)
-{
-	char error_buf[1024];
-
-	assert(error_code);
-
-	p_regerror(error_code, regex, error_buf, sizeof(error_buf));
-	git_error_set_str(GIT_ERROR_REGEX, error_buf);
-
-	if (error_code == P_REG_NOMATCH)
-		return GIT_ENOTFOUND;
-
-	return GIT_EINVALIDSPEC;
-}
-
 void git_error_clear(void)
 {
 	if (GIT_GLOBAL->last_error != NULL) {

src/errors.h

@@ -8,7 +8,6 @@
 #ifndef INCLUDE_errors_h__
 #define INCLUDE_errors_h__
 
-#include "posix_regex.h"
 #include "common.h"
 
 /*
@@ -17,12 +16,6 @@
 void git_error_set(int error_class, const char *fmt, ...) GIT_FORMAT_PRINTF(2, 3);
 void git_error_vset(int error_class, const char *fmt, va_list ap);
 
-/**
- * Set the error message for a regex failure, using the internal regex
- * error code lookup and return a libgit error code.
- */
-int git_error_set_regex(const p_regex_t *regex, int error_code);
-
 /**
  * Set error message for user callback if needed.
  *

src/posix_regex.h

@@ -9,23 +9,12 @@
 # endif
 #endif
 
-#include <locale.h>
-
 #include "clar_libgit2.h"
 #include "futils.h"
 #include "posix.h"
-#include "userdiff.h"
-
-#if LC_ALL > 0
-static const char *old_locales[LC_ALL];
-#endif
 
 void test_core_posix__initialize(void)
 {
-#if LC_ALL > 0
-	memset(&old_locales, 0, sizeof(old_locales));
-#endif
-
 #ifdef GIT_WIN32
 	/* on win32, the WSA context needs to be initialized
 	 * before any socket calls can be performed */
@@ -156,115 +145,6 @@ void test_core_posix__utimes(void)
 	cl_must_pass(p_unlink("foo"));
 }
 
-static void try_set_locale(int category)
-{
-#if LC_ALL > 0
-	old_locales[category] = setlocale(category, NULL);
-#endif
-
-	if (!setlocale(category, "UTF-8") &&
-	    !setlocale(category, "c.utf8") &&
-	    !setlocale(category, "en_US.UTF-8"))
-		cl_skip();
-
-	if (MB_CUR_MAX == 1)
-		cl_fail("Expected locale to be switched to multibyte");
-}
-
-void test_core_posix__p_regcomp_ignores_global_locale_ctype(void)
-{
-	p_regex_t preg;
-
-	try_set_locale(LC_CTYPE);
-
-	cl_assert(!p_regcomp(&preg, "[\xc0-\xff][\x80-\xbf]", P_REG_EXTENDED));
-
-	p_regfree(&preg);
-}
-
-void test_core_posix__p_regcomp_ignores_global_locale_collate(void)
-{
-	p_regex_t preg;
-
-#ifdef GIT_WIN32
-	cl_skip();
-#endif
-
-	try_set_locale(LC_COLLATE);
-	cl_assert(!p_regcomp(&preg, "[\xc0-\xff][\x80-\xbf]", P_REG_EXTENDED));
-
-	p_regfree(&preg);
-}
-
-void test_core_posix__p_regcomp_matches_digits_with_locale(void)
-{
-	p_regex_t preg;
-	char c, str[2];
-
-#ifdef GIT_WIN32
-	cl_skip();
-#endif
-
-	try_set_locale(LC_COLLATE);
-	try_set_locale(LC_CTYPE);
-
-	cl_assert(!p_regcomp(&preg, "[[:digit:]]", P_REG_EXTENDED));
-
-	str[1] = '\0';
-	for (c = '0'; c <= '9'; c++) {
-	    str[0] = c;
-	    cl_assert(!p_regexec(&preg, str, 0, NULL, 0));
-	}
-
-	p_regfree(&preg);
-}
-
-void test_core_posix__p_regcomp_matches_alphabet_with_locale(void)
-{
-	p_regex_t preg;
-	char c, str[2];
-
-#ifdef GIT_WIN32
-	cl_skip();
-#endif
-
-	try_set_locale(LC_COLLATE);
-	try_set_locale(LC_CTYPE);
-
-	cl_assert(!p_regcomp(&preg, "[[:alpha:]]", P_REG_EXTENDED));
-
-	str[1] = '\0';
-	for (c = 'a'; c <= 'z'; c++) {
-	    str[0] = c;
-	    cl_assert(!p_regexec(&preg, str, 0, NULL, 0));
-	}
-	for (c = 'A'; c <= 'Z'; c++) {
-	    str[0] = c;
-	    cl_assert(!p_regexec(&preg, str, 0, NULL, 0));
-	}
-
-	p_regfree(&preg);
-}
-
-void test_core_posix__p_regcomp_compile_userdiff_regexps(void)
-{
-	size_t idx;
-
-	for (idx = 0; idx < ARRAY_SIZE(builtin_defs); ++idx) {
-		git_diff_driver_definition ddef = builtin_defs[idx];
-		int error = 0;
-		p_regex_t preg;
-
-		error = p_regcomp(&preg, ddef.fns, P_REG_EXTENDED | ddef.flags);
-		p_regfree(&preg);
-		cl_assert(!error);
-
-		error = p_regcomp(&preg, ddef.words, P_REG_EXTENDED);
-		p_regfree(&preg);
-		cl_assert(!error);
-	}
-}
-
 void test_core_posix__unlink_removes_symlink(void)
 {
 	if (!git_path_supports_symlinks(clar_sandbox_path()))